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2.
J Clin Oncol ; 33(28): 3124-9, 2015 Oct 01.
Artigo em Inglês | MEDLINE | ID: mdl-25940717

RESUMO

PURPOSE: The main purpose of this study was to determine the prevalence of pathogenic BRCA1 and BRCA2 mutations in a consecutively ascertained clinic-based cohort of patients with pancreatic ductal adenocarcinoma and describe the clinical and family history characteristics. PATIENTS AND METHODS: Unselected, consecutive, incident patients with pancreatic ductal adenocarcinoma were recruited at a single cancer center over a 2-year period. Participants provided blood for DNA analysis and cancer family history, and cancer treatment records were reviewed. DNA from all patients was analyzed by Sanger sequencing and multiplex ligation-dependent probe amplification for germline variants in BRCA1 and BRCA2. RESULTS: Three hundred six patients were eligible for analysis. Pathogenic germline BRCA mutations were identified in 14 patients (4.6%; 95% CI, 2.2% to 6.9%), including 11 patients with a BRCA2 mutation and three patients with a BRCA1 mutation. Having a cancer family history that met genetic testing criteria of the National Comprehensive Cancer Network or the Ontario Ministry of Health and Long-Term Care or self-reporting as Ashkenazi Jewish was significantly associated with BRCA mutation carrier status (P=.02, P<.001, and P=.05, respectively). However, the majority of the BRCA mutation-positive patients did not actually meet these genetic testing criteria. CONCLUSION: Pathogenic BRCA mutations were identified in 4.6% of a large cohort of clinic-based patients. Considering the implications for family members of BRCA carriers, and possibly tailored chemotherapeutic treatment of patients, our finding has implications for broader BRCA genetic testing for patients with pancreatic ductal adenocarcinoma.


Assuntos
Proteína BRCA1/genética , Proteína BRCA2/genética , Carcinoma Ductal Pancreático/genética , Mutação em Linhagem Germinativa , Neoplasias Pancreáticas/genética , Adulto , Idoso , Idoso de 80 Anos ou mais , Carcinoma Ductal Pancreático/etnologia , Carcinoma Ductal Pancreático/patologia , Análise Mutacional de DNA/métodos , Feminino , Frequência do Gene , Predisposição Genética para Doença , Hereditariedade , Humanos , Incidência , Judeus/genética , Masculino , Pessoa de Meia-Idade , Reação em Cadeia da Polimerase Multiplex , Ontário/epidemiologia , Neoplasias Pancreáticas/etnologia , Neoplasias Pancreáticas/patologia , Linhagem , Fenótipo , Prognóstico , Estudos Prospectivos , Fatores de Risco
3.
J Prev Med Public Health ; 47(4): 183-200, 2014 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-25139165

RESUMO

Cancer is a major cause of mortality and morbidity throughout the world, including the countries of North-East and South-East Asia. Assessment of burden through cancer registration, determination of risk and protective factors, early detection and screening, clinical practice, interventions for example in vaccination, tobacco cessation efforts and palliative care all should be included in comprehensive cancer control programs. The degree to which this is possible naturally depends on the resources available at local, national and international levels. The present review concerns elements of cancer control programs established in China, Taiwan, Korea, and Japan in North-East Asia, Viet Nam, Thailand, Malaysia, and Indonesia as representative larger countries of South-East Asia for comparison, using the published literature as a guide. While major advances have been made, there are still areas which need more attention, especially in South-East Asia, and international cooperation is essential if standard guidelines are to be generated to allow effective cancer control efforts throughout the Far East. Cancer is a major cause of mortality and morbidity throughout the world, including the countries of North-East and South-East Asia. Assessment of burden through cancer registration, determination of risk and protective factors, early detection and screening, clinical practice, interventions for example in vaccination, tobacco cessation efforts and palliative care all should be included in comprehensive cancer control programs. The degree to which this is possible naturally depends on the resources available at local, national and international levels. The present review concerns elements of cancer control programs established in China, Taiwan, Korea, and Japan in North-East Asia, Viet Nam, Thailand, Malaysia, and Indonesia as representative larger countries of South-East Asia for comparison, using the published literature as a guide. While major advances have been made, there are still areas which need more attention, especially in South-East Asia, and international cooperation is essential if standard guidelines are to be generated to allow effective cancer control efforts throughout the Far East.


Assuntos
Neoplasias/prevenção & controle , Sudeste Asiático , Bases de Dados Factuais , Ásia Oriental , Humanos , Incidência , Neoplasias/diagnóstico , Neoplasias/epidemiologia , Publicações Periódicas como Assunto , Política Pública , Sistema de Registros , Fatores de Risco , Política Antifumo
4.
Proc Natl Acad Sci U S A ; 111(8): 2885-90, 2014 Feb 25.
Artigo em Inglês | MEDLINE | ID: mdl-24516138

RESUMO

Granulocyte-macrophage colony-stimulating factor (GM-CSF) is a medicinally important glycoprotein, used as an immunostimulant following bone-marrow transplant. On the basis of reports of its potential utility as an anticancer vaccine adjuvant, we undertook to develop a synthetic route toward single-glycoform GM-CSF. We describe herein a convergent total synthesis of GM-CSF aglycone and two homogeneous glycoforms. Analytical and biological studies confirm the structure and activity of these synthetic congeners.


Assuntos
Fator Estimulador de Colônias de Granulócitos e Macrófagos/síntese química , Modelos Moleculares , Conformação Proteica , Alanina/química , Sequência de Aminoácidos , Cisteína/química , Escherichia coli , Glicosilação , Dados de Sequência Molecular , Estrutura Molecular
5.
J Natl Cancer Inst ; 106(1): djt347, 2014 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-24301456

RESUMO

BACKGROUND: Human equilibrative nucleoside transporter 1 (hENT1) levels in pancreatic adenocarcinoma may predict survival in patients who receive adjuvant gemcitabine after resection. METHODS: Microarrays from 434 patients randomized to chemotherapy in the ESPAC-3 trial (plus controls from ESPAC-1/3) were stained with the 10D7G2 anti-hENT1 antibody. Patients were classified as having high hENT1 expression if the mean H score for their cores was above the overall median H score (48). High and low hENT1-expressing groups were compared using Kaplan-Meier curves, log-rank tests, and Cox proportional hazards models. All statistical tests were two-sided. RESULTS: Three hundred eighty patients (87.6%) and 1808 cores were suitable and included in the final analysis. Median overall survival for gemcitabine-treated patients (n = 176) was 23.4 (95% confidence interval [CI] = 18.3 to 26.0) months vs 23.5 (95% CI = 19.8 to 27.3) months for 176 patients treated with 5-fluorouracil/folinic acid (χ(2) 1=0.24; P = .62). Median survival for patients treated with gemcitabine was 17.1 (95% CI = 14.3 to 23.8) months for those with low hENT1 expression vs 26.2 (95% CI = 21.2 to 31.4) months for those with high hENT1 expression (χ(2)1= 9.87; P = .002). For the 5-fluorouracil group, median survival was 25.6 (95% CI = 20.1 to 27.9) and 21.9 (95% CI = 16.0 to 28.3) months for those with low and high hENT1 expression, respectively (χ(2)1 = 0.83; P = .36). hENT1 levels were not predictive of survival for the 28 patients of the observation group (χ(2)1 = 0.37; P = .54). Multivariable analysis confirmed hENT1 expression as a predictive marker in gemcitabine-treated (Wald χ(2) = 9.16; P = .003) but not 5-fluorouracil-treated (Wald χ(2) = 1.22; P = .27) patients. CONCLUSIONS: Subject to prospective validation, gemcitabine should not be used for patients with low tumor hENT1 expression.


Assuntos
Adenocarcinoma/mortalidade , Antimetabólitos Antineoplásicos/uso terapêutico , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Biomarcadores Tumorais/metabolismo , Desoxicitidina/análogos & derivados , Transportador Equilibrativo 1 de Nucleosídeo/metabolismo , Neoplasias Pancreáticas/mortalidade , Adenocarcinoma/tratamento farmacológico , Adenocarcinoma/metabolismo , Adulto , Idoso , Desoxicitidina/uso terapêutico , Intervalo Livre de Doença , Europa (Continente)/epidemiologia , Feminino , Fluoruracila/administração & dosagem , Humanos , Estimativa de Kaplan-Meier , Leucovorina/administração & dosagem , Masculino , Pessoa de Meia-Idade , Neoplasias Pancreáticas/tratamento farmacológico , Neoplasias Pancreáticas/metabolismo , Resultado do Tratamento , Gencitabina
6.
Lancet Oncol ; 13(12): 1225-33, 2012 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-23168362

RESUMO

BACKGROUND: Bevacizumab improves the efficacy of oxaliplatin-based chemotherapy in metastatic colorectal cancer. Our aim was to assess the use of bevacizumab in combination with oxaliplatin-based chemotherapy in the adjuvant treatment of patients with resected stage III or high-risk stage II colon carcinoma. METHODS: Patients from 330 centres in 34 countries were enrolled into this phase 3, open-label randomised trial. Patients with curatively resected stage III or high-risk stage II colon carcinoma were randomly assigned (1:1:1) to receive FOLFOX4 (oxaliplatin 85 mg/m(2), leucovorin 200 mg/m(2), and fluorouracil 400 mg/m(2) bolus plus 600 mg/m(2) 22-h continuous infusion on day 1; leucovorin 200 mg/m(2) plus fluorouracil 400 mg/m(2) bolus plus 600 mg/m(2) 22-h continuous infusion on day 2) every 2 weeks for 12 cycles; bevacizumab 5 mg/kg plus FOLFOX4 (every 2 weeks for 12 cycles) followed by bevacizumab monotherapy 7·5 mg/kg every 3 weeks (eight cycles over 24 weeks); or bevacizumab 7·5 mg/kg plus XELOX (oxaliplatin 130 mg/m(2) on day 1 every 2 weeks plus oral capecitabine 1000 mg/m(2) twice daily on days 1-15) every 3 weeks for eight cycles followed by bevacizumab monotherapy 7·5 mg/kg every 3 weeks (eight cycles over 24 weeks). Block randomisation was done with a central interactive computerised system, stratified by geographic region and disease stage. Surgery with curative intent occurred 4-8 weeks before randomisation. The primary endpoint was disease-free survival, analysed for all randomised patients with stage III disease. This study is registered with ClinicalTrials.gov, number NCT00112918. FINDINGS: Of the total intention-to-treat population (n=3451), 2867 patients had stage III disease, of whom 955 were randomly assigned to receive FOLFOX4, 960 to receive bevacizumab-FOLFOX4, and 952 to receive bevacizumab-XELOX. After a median follow-up of 48 months (range 0-66 months), 237 patients (25%) in the FOLFOX4 group, 280 (29%) in the bevacizumab-FOLFOX4 group, and 253 (27%) in the bevacizumab-XELOX group had relapsed, developed a new colon cancer, or died. The disease-free survival hazard ratio for bevacizumab-FOLFOX4 versus FOLFOX4 was 1·17 (95% CI 0·98-1·39; p=0·07), and for bevacizumab-XELOX versus FOLFOX4 was 1·07 (0·90-1·28; p=0·44). After a minimum follow-up of 60 months, the overall survival hazard ratio for bevacizumab-FOLFOX4 versus FOLFOX4 was 1·27 (1·03-1·57; p=0·02), and for bevacizumab-XELOX versus FOLFOX4 was 1·15 (0·93-1·42; p=0·21). The 573 patients with high-risk stage II cancer were included in the safety analysis. The most common grade 3-5 adverse events were neutropenia (FOLFOX4: 477 [42%] of 1126 patients, bevacizumab-FOLFOX4: 416 [36%] of 1145 patients, and bevacizumab-XELOX: 74 [7%] of 1135 patients), diarrhoea (110 [10%], 135 [12%], and 181 [16%], respectively), and hypertension (12 [1%], 122 [11%], and 116 [10%], respectively). Serious adverse events were more common in the bevacizumab groups (bevacizumab-FOLFOX4: 297 [26%]; bevacizumab-XELOX: 284 [25%]) than in the FOLFOX4 group (226 [20%]). Treatment-related deaths were reported in one patient receiving FOLFOX4, two receiving bevacizumab-FOLFOX4, and five receiving bevacizumab-XELOX. INTERPRETATION: Bevacizumab does not prolong disease-free survival when added to adjuvant chemotherapy in resected stage III colon cancer. Overall survival data suggest a potential detrimental effect with bevacizumab plus oxaliplatin-based adjuvant therapy in these patients. On the basis of these and other data, we do not recommend the use of bevacizumab in the adjuvant treatment of patients with curatively resected stage III colon cancer. FUNDING: Genentech, Roche, and Chugai.


Assuntos
Anticorpos Monoclonais Humanizados/administração & dosagem , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Neoplasias do Colo/tratamento farmacológico , Compostos Organoplatínicos/administração & dosagem , Adulto , Idoso , Idoso de 80 Anos ou mais , Protocolos de Quimioterapia Combinada Antineoplásica/administração & dosagem , Bevacizumab , Capecitabina , Quimioterapia Adjuvante , Neoplasias do Colo/patologia , Desoxicitidina/administração & dosagem , Desoxicitidina/análogos & derivados , Feminino , Fluoruracila/administração & dosagem , Fluoruracila/análogos & derivados , Humanos , Infusões Intravenosas , Leucovorina/administração & dosagem , Masculino , Pessoa de Meia-Idade , Oxaliplatina , Oxaloacetatos , Adulto Jovem
7.
JAMA ; 308(2): 147-56, 2012 Jul 11.
Artigo em Inglês | MEDLINE | ID: mdl-22782416

RESUMO

CONTEXT: Patients with periampullary adenocarcinomas undergo the same resectional surgery as that of patients with pancreatic ductal adenocarcinoma. Although adjuvant chemotherapy has been shown to have a survival benefit for pancreatic cancer, there have been no randomized trials for periampullary adenocarcinomas. OBJECTIVE: To determine whether adjuvant chemotherapy (fluorouracil or gemcitabine) provides improved overall survival following resection. DESIGN, SETTING, AND PATIENTS: The European Study Group for Pancreatic Cancer (ESPAC)-3 periampullary trial, an open-label, phase 3, randomized controlled trial (July 2000-May 2008) in 100 centers in Europe, Australia, Japan, and Canada. Of the 428 patients included in the primary analysis, 297 had ampullary, 96 had bile duct, and 35 had other cancers. INTERVENTIONS: One hundred forty-four patients were assigned to the observation group, 143 patients to receive 20 mg/m2 of folinic acid via intravenous bolus injection followed by 425 mg/m2 of fluorouracil via intravenous bolus injection administered 1 to 5 days every 28 days, and 141 patients to receive 1000 mg/m2 of intravenous infusion of gemcitabine once a week for 3 of every 4 weeks for 6 months. MAIN OUTCOME MEASURES: The primary outcome measure was overall survival with chemotherapy vs no chemotherapy; secondary measures were chemotherapy type, toxic effects, progression-free survival, and quality of life. RESULTS: Eighty-eight patients (61%) in the observation group, 83 (58%) in the fluorouracil plus folinic acid group, and 73 (52%) in the gemcitabine group died. In the observation group, the median survival was 35.2 months (95%% CI, 27.2-43.0 months) and was 43.1 (95%, CI, 34.0-56.0) in the 2 chemotherapy groups (hazard ratio, 0.86; (95% CI, 0.66-1.11; χ2 = 1.33; P = .25). After adjusting for independent prognostic variables of age, bile duct cancer, poor tumor differentiation, and positive lymph nodes and after conducting multiple regression analysis, the hazard ratio for chemotherapy compared with observation was 0.75 (95% CI, 0.57-0.98; Wald χ2 = 4.53, P = .03). CONCLUSIONS: Among patients with resected periampullary adenocarcinoma, adjuvant chemotherapy, compared with observation, was not associated with a significant survival benefit in the primary analysis; however, multivariable analysis adjusting for prognostic variables demonstrated a statistically significant survival benefit associated with adjuvant chemotherapy. TRIAL REGISTRATION: clinicaltrials.gov Identifier: NCT00058201.


Assuntos
Adenocarcinoma/tratamento farmacológico , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Neoplasias do Ducto Colédoco/tratamento farmacológico , Conduta Expectante , Adenocarcinoma/cirurgia , Idoso , Ampola Hepatopancreática , Quimioterapia Adjuvante , Neoplasias do Ducto Colédoco/cirurgia , Desoxicitidina/administração & dosagem , Desoxicitidina/análogos & derivados , Feminino , Fluoruracila/administração & dosagem , Humanos , Leucovorina/administração & dosagem , Masculino , Pessoa de Meia-Idade , Prognóstico , Análise de Sobrevida , Gencitabina
8.
Nurs Econ ; 30(2): 108-16, 2012.
Artigo em Inglês | MEDLINE | ID: mdl-22558729

RESUMO

While rapid changes in the treatment of cancer have been driven by research-based evidence, innovations in cancer care delivery have lagged behind that seen in cancer treatment. A literature review and ten semi-structured interviews were conducted to identify models of care in the ambulatory oncology setting to be adopted by a comprehensive cancer center. Four models were identified from the literature review but none were widely recognized or adopted by administrators. Findings suggested some common themes that should be included in an optimal model of care. These themes are in support of the burgeoning efforts seen in the promotion of interprofessional education and practice for quality improvement. Unique challenges related to the contextual factors in the ambulatory oncology settings suggest quality improvement interventions should be tailored to meet the specific needs of the care facility and its workforce.


Assuntos
Instituições de Assistência Ambulatorial/organização & administração , Institutos de Câncer/organização & administração , Modelos Teóricos , Neoplasias/terapia , Humanos
9.
Asian Pac J Cancer Prev ; 12(4): 1089-93, 2011.
Artigo em Inglês | MEDLINE | ID: mdl-21790257

RESUMO

In the time period 1990-2004 we conducted a multisite case-control study in order to examine the relationship of mate consumption and risk of 13 cancer sites in Montevideo, Uruguay. The study included 13,201 participants (8,875 cases and 4,326 controls) drawn from the four major public hospitals in the city of Montevideo. Newly diagnosed and microscopically confirmed cases of cancers of the mouth, pharynx, esophagus, stomach, colon, rectum, larynx, lung, female breast, cervix uteri, prostate, bladder and kidney were included in the study. Controls were drawn from the same hospitals and in the same time period and were afflicted by non-neoplastic conditions not related with tobacco smoking or alcohol drinking and without recent changes in their diets. Odds ratios for mate consumption was directly associated with cancers of the upper aerodigestive tract (UADT), esophagus, stomach, larynx, lung, cervix uteri, prostate, bladder, and kidney. In conclusion these results suggest that chemicals, like benzo[a]pyrene, could be responsible of the carcinogenic effect of mate in the above mentioned cancer sites.


Assuntos
Bebidas/efeitos adversos , Ilex paraguariensis/química , Neoplasias/epidemiologia , Neoplasias/etiologia , Extratos Vegetais/intoxicação , Consumo de Bebidas Alcoólicas/efeitos adversos , Consumo de Bebidas Alcoólicas/epidemiologia , Estudos de Casos e Controles , Dieta , Feminino , Humanos , Masculino , Razão de Chances , Fatores de Risco , Fumar/efeitos adversos , Fumar/epidemiologia , Inquéritos e Questionários , Uruguai/epidemiologia
10.
J Natl Cancer Inst ; 103(11): 863-75, 2011 Jun 08.
Artigo em Inglês | MEDLINE | ID: mdl-21597022

RESUMO

BACKGROUND: Approximately 15% of colorectal cancers develop because of defective function of the DNA mismatch repair (MMR) system. We determined the association of MMR status with colon cancer recurrence and examined the impact of 5-fluorouracil (FU)-based adjuvant therapy on recurrence variables. METHODS: We included stage II and III colon carcinoma patients (n = 2141) who were treated in randomized trials of 5-FU-based adjuvant therapy. Tumors were analyzed for microsatellite instability by polymerase chain reaction and/or for MMR protein expression by immunohistochemistry to determine deficient MMR (dMMR) or proficient MMR (pMMR) status. Associations of MMR status and/or 5-FU-based treatment with clinicopathologic and recurrence covariates were determined using χ(2) or Fisher Exact or Wilcoxon rank-sum tests. Time to recurrence (TTR), disease-free survival (DFS), and overall survival (OS) were analyzed using univariate and multivariable Cox models, with the latter adjusted for covariates. Tumors showing dMMR were categorized by presumed germline vs sporadic origin and were assessed for their prognostic and predictive impact. All statistical tests were two-sided. RESULTS: In this study population, dMMR was detected in 344 of 2141 (16.1%) tumors. Compared with pMMR tumors, dMMR was associated with reduced 5-year recurrence rates (33% vs 22%; P < .001), delayed TTR (P < .001), and fewer distant recurrences (22% vs 12%; P < .001). In multivariable models, dMMR was independently associated with delayed TTR (hazard ratio = 0.72, 95% confidence interval = 0.56 to 0.91, P = .005) and improved DFS (P = .035) and OS (P = .031). In stage III cancers, 5-FU-based treatment vs surgery alone or no 5-FU was associated with reduced distant recurrence for dMMR tumors (11% vs 29%; P = .011) and reduced recurrence to all sites for pMMR tumors (P < .001). The dMMR tumors with suspected germline mutations were associated with improved DFS after 5-FU-based treatment compared with sporadic tumors where no benefit was observed (P = .006). CONCLUSIONS: Patients with dMMR colon cancers have reduced rates of tumor recurrence, delayed TTR, and improved survival rates, compared with pMMR colon cancers. Distant recurrences were reduced by 5-FU-based adjuvant treatment in dMMR stage III tumors, and a subset analysis suggested that any treatment benefit was restricted to suspected germline vs sporadic tumors.


Assuntos
Adenocarcinoma/secundário , Adenocarcinoma/terapia , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Neoplasias do Colo/patologia , Neoplasias do Colo/terapia , Reparo de Erro de Pareamento de DNA , Fluoruracila/administração & dosagem , Recidiva Local de Neoplasia/genética , Proteínas Adaptadoras de Transdução de Sinal/genética , Adenocarcinoma/genética , Adenocarcinoma/mortalidade , Adenocarcinoma/cirurgia , Adulto , Idoso , Idoso de 80 Anos ou mais , Análise de Variância , Quimioterapia Adjuvante , Neoplasias do Colo/genética , Neoplasias do Colo/mortalidade , Neoplasias do Colo/cirurgia , Proteínas de Ligação a DNA/genética , Intervalo Livre de Doença , Feminino , Mutação em Linhagem Germinativa , Humanos , Masculino , Instabilidade de Microssatélites , Pessoa de Meia-Idade , Análise Multivariada , Proteína 1 Homóloga a MutL , Proteína 2 Homóloga a MutS/genética , Estadiamento de Neoplasias , Proteínas Nucleares/genética , Valor Preditivo dos Testes , Prognóstico , Modelos de Riscos Proporcionais , Proteínas Proto-Oncogênicas B-raf/genética , Ensaios Clínicos Controlados Aleatórios como Assunto , Recidiva , Estudos Retrospectivos , Análise de Sobrevida
11.
Invest New Drugs ; 29(5): 1045-9, 2011 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-20191303

RESUMO

BACKGROUND: Sorafenib is an oral multikinase inhibitor that blocks cell proliferation via the ERK pathway and angiogenesis via the VEGF pathway. This phase II trial was conducted to determine the efficacy and tolerability of sorafenib for the treatment of patients with metastatic urothelial cancer (UC) who had not had prior chemotherapy for advanced disease. PATIENTS AND METHODS: Seventeen chemo-naïve UC patients with adequate performance status and organ function were treated with sorafenib 400 mg twice daily on a continuous basis until progression or unacceptable toxicity. The primary endpoint was objective tumor response rate as measured by RECIST criteria. Secondary endpoints included rate of prolonged stable disease (>3 months), time to progression, median and 1 yr survival and safety and tolerability. RESULTS: There were no objective responses. Only one patient had stable disease by RECIST criteria and remained on treatment more than 3 months. Three patients had stable disease by RECIST criteria but were on treatment less than 3 months due to progressive disease (PD) or adverse events (AE). Eight patients had PD by RECIST criteria as their best overall response. Two patients had symptomatic PD prior to cycle 2 evaluation, and three patients were inevaluable (1 death, 1 AE, 1 withdrew consent).The time to progression was 1.9 months (range 0.7-8.7 months) and median survival was 5.9 months. The most common grade 3+ toxicities were abdominal pain, back pain, hand-foot reaction and bladder infection. CONCLUSIONS: Sorafenib does not show sufficient activity as a single agent in first-line metastatic urothelial cancer to warrant further investigation.


Assuntos
Antineoplásicos/uso terapêutico , Benzenossulfonatos/uso terapêutico , Inibidores de Proteínas Quinases/uso terapêutico , Piridinas/uso terapêutico , Neoplasias Urológicas/tratamento farmacológico , Neoplasias Urológicas/patologia , Urotélio/patologia , Adulto , Idoso , Idoso de 80 Anos ou mais , Antineoplásicos/efeitos adversos , Benzenossulfonatos/efeitos adversos , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Metástase Neoplásica , Niacinamida/análogos & derivados , Compostos de Fenilureia , Inibidores de Proteínas Quinases/efeitos adversos , Piridinas/efeitos adversos , Sorafenibe , Resultado do Tratamento
12.
Clin Cancer Res ; 16(23): 5630-40, 2010 Dec 01.
Artigo em Inglês | MEDLINE | ID: mdl-21138865

RESUMO

PURPOSE: Recent evidence suggests that at least some sarcomas arise through aberrant differentiation of mesenchymal stromal cells (MSCs), but MSCs have never been isolated directly from human sarcoma specimens. EXPERIMENTAL DESIGN: We examined human sarcoma cell lines and primary adherent cultures derived from human sarcoma surgical samples for features of MSCs. We further characterized primary cultures as either benign or malignant by the presence of tumor-defining genetic lesions and tumor formation in immunocompromised mice. RESULTS: We show that a dedifferentiated liposarcoma cell line DDLS8817 posesses fat, bone, and cartilage trilineage differentiation potential characteristic of MSCs. Primary sarcoma cultures have the morphology, surface immunophenotype, and differentiation potential characteristic of MSCs. Surprisingly, many of these cultures are benign, as they do not form tumors in mice and lack sarcoma-defining genetic lesions. Consistent with the recently proposed pericyte origin of MSCs in normal human tissues, sarcoma-derived benign MSCs (SDBMSCs) express markers of pericytes and cooperate with endothelial cells in tube formation assays. In human sarcoma specimens, a subset of CD146-positive microvascular pericytes expresses CD105, an MSC marker, whereas malignant cells largely do not. In an in vitro coculture model, SDBMSCs as well as normal human pericytes markedly stimulate the growth of sarcoma cell lines. CONCLUSIONS: SDBMSCs/pericytes represent a previously undescribed stromal cell type in sarcoma that may contribute to tumor formation.


Assuntos
Células-Tronco Mesenquimais/patologia , Células-Tronco Mesenquimais/fisiologia , Sarcoma/patologia , Células Estromais/patologia , Células Estromais/fisiologia , Animais , Diferenciação Celular/fisiologia , Linhagem Celular Tumoral , Separação Celular/métodos , Avaliação Pré-Clínica de Medicamentos/métodos , Feminino , Humanos , Subunidade gama Comum de Receptores de Interleucina/genética , Camundongos , Camundongos Endogâmicos NOD , Camundongos SCID , Camundongos Transgênicos , Transplante Heterólogo
13.
JAMA ; 304(10): 1073-81, 2010 Sep 08.
Artigo em Inglês | MEDLINE | ID: mdl-20823433

RESUMO

CONTEXT: Adjuvant fluorouracil has been shown to be of benefit for patients with resected pancreatic cancer. Gemcitabine is known to be the most effective agent in advanced disease as well as an effective agent in patients with resected pancreatic cancer. OBJECTIVE: To determine whether fluorouracil or gemcitabine is superior in terms of overall survival as adjuvant treatment following resection of pancreatic cancer. DESIGN, SETTING, AND PATIENTS: The European Study Group for Pancreatic Cancer (ESPAC)-3 trial, an open-label, phase 3, randomized controlled trial conducted in 159 pancreatic cancer centers in Europe, Australasia, Japan, and Canada. Included in ESPAC-3 version 2 were 1088 patients with pancreatic ductal adenocarcinoma who had undergone cancer resection; patients were randomized between July 2000 and January 2007 and underwent at least 2 years of follow-up. INTERVENTIONS: Patients received either fluorouracil plus folinic acid (folinic acid, 20 mg/m(2), intravenous bolus injection, followed by fluorouracil, 425 mg/m(2) intravenous bolus injection given 1-5 days every 28 days) (n = 551) or gemcitabine (1000 mg/m(2) intravenous infusion once a week for 3 of every 4 weeks) (n = 537) for 6 months. MAIN OUTCOME MEASURES: Primary outcome measure was overall survival; secondary measures were toxicity, progression-free survival, and quality of life. RESULTS: Final analysis was carried out on an intention-to-treat basis after a median of 34.2 (interquartile range, 27.1-43.4) months' follow-up after 753 deaths (69%). Median survival was 23.0 (95% confidence interval [CI], 21.1-25.0) months for patients treated with fluorouracil plus folinic acid and 23.6 (95% CI, 21.4-26.4) months for those treated with gemcitabine (chi(1)(2) = 0.7; P = .39; hazard ratio, 0.94 [95% CI, 0.81-1.08]). Seventy-seven patients (14%) receiving fluorouracil plus folinic acid had 97 treatment-related serious adverse events, compared with 40 patients (7.5%) receiving gemcitabine, who had 52 events (P < .001). There were no significant differences in either progression-free survival or global quality-of-life scores between the treatment groups. CONCLUSION: Compared with the use of fluorouracil plus folinic acid, gemcitabine did not result in improved overall survival in patients with completely resected pancreatic cancer. TRIAL REGISTRATION: clinicaltrials.gov Identifier: NCT00058201.


Assuntos
Adenocarcinoma/tratamento farmacológico , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Quimioterapia Adjuvante , Desoxicitidina/análogos & derivados , Neoplasias Pancreáticas/tratamento farmacológico , Adenocarcinoma/cirurgia , Idoso , Protocolos de Quimioterapia Combinada Antineoplásica/efeitos adversos , Desoxicitidina/efeitos adversos , Desoxicitidina/uso terapêutico , Progressão da Doença , Feminino , Fluoruracila/administração & dosagem , Humanos , Infusões Intravenosas , Injeções Intravenosas , Leucovorina/administração & dosagem , Masculino , Pessoa de Meia-Idade , Neoplasias Pancreáticas/cirurgia , Qualidade de Vida , Análise de Sobrevida , Gencitabina
14.
J Clin Oncol ; 28(20): 3219-26, 2010 Jul 10.
Artigo em Inglês | MEDLINE | ID: mdl-20498393

RESUMO

PURPOSE: Prior reports have indicated that patients with colon cancer who demonstrate high-level microsatellite instability (MSI-H) or defective DNA mismatch repair (dMMR) have improved survival and receive no benefit from fluorouracil (FU) -based adjuvant therapy compared with patients who have microsatellite-stable or proficient mismatch repair (pMMR) tumors. We examined MMR status as a predictor of adjuvant therapy benefit in patients with stages II and III colon cancer. METHODS: MSI assay or immunohistochemistry for MMR proteins were performed on 457 patients who were previously randomly assigned to FU-based therapy (either FU + levamisole or FU + leucovorin; n = 229) versus no postsurgical treatment (n = 228). Data were subsequently pooled with data from a previous analysis. The primary end point was disease-free survival (DFS). RESULTS: Overall, 70 (15%) of 457 patients exhibited dMMR. Adjuvant therapy significantly improved DFS (hazard ratio [HR], 0.67; 95% CI, 0.48 to 0.93; P = .02) in patients with pMMR tumors. Patients with dMMR tumors receiving FU had no improvement in DFS (HR, 1.10; 95% CI, 0.42 to 2.91; P = .85) compared with those randomly assigned to surgery alone. In the pooled data set of 1,027 patients (n = 165 with dMMR), these findings were maintained; in patients with stage II disease and with dMMR tumors, treatment was associated with reduced overall survival (HR, 2.95; 95% CI, 1.02 to 8.54; P = .04). CONCLUSION: Patient stratification by MMR status may provide a more tailored approach to colon cancer adjuvant therapy. These data support MMR status assessment for patients being considered for FU therapy alone and consideration of MMR status in treatment decision making.


Assuntos
Neoplasias do Colo/tratamento farmacológico , Reparo de Erro de Pareamento de DNA , Idoso , Antimetabólitos Antineoplásicos/uso terapêutico , Biomarcadores , Quimioterapia Adjuvante , Neoplasias do Colo/genética , Neoplasias do Colo/mortalidade , Neoplasias do Colo/patologia , Terapia Combinada , Intervalo Livre de Doença , Resistencia a Medicamentos Antineoplásicos/genética , Feminino , Fluoruracila/administração & dosagem , Humanos , Masculino , Pessoa de Meia-Idade , Prognóstico , Ensaios Clínicos Controlados Aleatórios como Assunto
15.
J Clin Oncol ; 28(18): 3084-9, 2010 Jun 20.
Artigo em Inglês | MEDLINE | ID: mdl-20479397

RESUMO

PURPOSE: Although early intervention is increasingly advocated to prevent and relieve distress in patients with metastatic cancer, the risk factors for such symptoms and their trajectory are not well established. We therefore conducted a longitudinal study to determine the course and predictors of depressive symptoms. PATIENTS AND METHODS: Patients (N = 365) with metastatic gastrointestinal or lung cancer completed measures of physical distress, self-esteem, attachment security, spiritual well-being, social support, hopelessness, and depression at baseline; physical distress, social support, hopelessness, and depression were subsequently assessed at 2-month intervals. RESULTS: Of the sample, 35% reported at least mild depressive symptoms, with 16% reporting moderate to severe depressive symptoms that persisted in at least one third of such individuals. Moderate to severe depressive symptoms were almost three times more common in the final 3 months of life than > or = 1 year before death. Predictors of depressive symptoms included younger age, antidepressant use at baseline, lower self-esteem and spiritual well-being, and greater attachment anxiety, hopelessness, physical burden of illness, and proximity to death. The combination of greater physical suffering and psychosocial vulnerability put individuals at greatest risk for depression. CONCLUSION: Depressive symptoms in advanced cancer patients are relatively common and may arise as a final common pathway of distress in response to psychosocial vulnerabilities, physical suffering, and proximity to death. These findings support the need for an integrated approach to address emotional and physical distress in this population and to determine whether early intervention may prevent depression at the end of life.


Assuntos
Atitude Frente a Saúde , Transtorno Depressivo/etiologia , Neoplasias Gastrointestinais/psicologia , Neoplasias Pulmonares/psicologia , Autoimagem , Adulto , Idoso , Idoso de 80 Anos ou mais , Atitude Frente a Morte , Estudos Transversais , Feminino , Humanos , Estudos Longitudinais , Masculino , Pessoa de Meia-Idade , Metástase Neoplásica , Qualidade de Vida , Fatores de Risco , Apoio Social , Espiritualidade , Taxa de Sobrevida , Adulto Jovem
16.
Asian Pac J Cancer Prev ; 9(3): 427-32, 2008.
Artigo em Inglês | MEDLINE | ID: mdl-18990015

RESUMO

The present work aimed to provide a basis for examination of intake of selected food items determined with a semi-quantitative food frequency questionnaire (SQFFQ) and planned-food selection (PFS). From February to July of 2003, ninety one cancer patients and 90 matched (same sex and age within 5 years) non-cancer patients were directly interviewed by trained interviewers using the designed questionnaire at the inpatient-department of Viet Duc hospital, Ha Noi City, Viet Nam. Study subjects consumed more SQFFQ-food items than PFS-food items, so that the latter method might not accurately reflect dietary habits regarding estimation of nutrient intake, especially vitamins. Because these are beneficial factors acting against cancer development at many sites, the absence of food items selected by SQFFQ may result in a poor database regarding possible confounding factors. For futher clarification we then focused on vitamin C contributions of Vietnamese food and analyzed data of the National Nutritional Household Survey in 2000: 7,686 households throughout the country (vitamin C intake status) and 158 households with 741 persons of the population of Hanoi city (individual food items contributing to vitamin C). Direct interview using a validated questionnaire with an album of current Vietnamese food items-recipes and weighing checks was conducted to obtain information regarding all types of food intake over the last 24-hours. Contribution analysis using the Nutritive Composition Table of Vietnamese Foods, revision 2000, and stepwise regression analysis was applied. Average intake adjusted by ages of vitamin C per person per day was estimated. In total, the study subjects were found to currently consume 184 food items. Average intake of vitamin C was 72.5 mg per person per day at the national level: 57.9% from leafy vegetables, 33.4% from fresh fruits, and 6.4% from non-leafy vegetables. For vitamin C contribution, the highest 25 food items contributed to a cumulative 95.3% of vitamin C intake with a cumulative R2=0.99.


Assuntos
Ácido Ascórbico/administração & dosagem , Comportamento Alimentar , Preferências Alimentares , Neoplasias/dietoterapia , Inquéritos e Questionários , Estudos de Casos e Controles , Inquéritos sobre Dietas , Suplementos Nutricionais , Ingestão de Energia , Feminino , Humanos , Masculino , Neoplasias/epidemiologia , Neoplasias/patologia , Necessidades Nutricionais , Probabilidade , Valores de Referência , Sistema de Registros , Vietnã
17.
Cancer ; 113(11): 3267-74, 2008 Dec 01.
Artigo em Inglês | MEDLINE | ID: mdl-18932247

RESUMO

BACKGROUND: Acute palliative care units (APCUs) are gaining popularity in tertiary care centers. In this study, the authors examined the impact of opening an APCU on administrative outcomes for a general oncology ward (GOW) at a comprehensive cancer center. METHODS: The GOW database was reviewed for 3 periods: June 2000 through May 2002 (before the APCU opened), June 2002 through May 2004 (transitional period, including APCU opening in a temporary location), and June 2004 through May 2006 (after opening of the APCU). Data were extracted on demographics, reasons for admission, admission type, waiting time for admission, length of stay (LOS), overstay (>2 days over expected LOS), death rate, and discharge destination. Linear regression analysis and the Cochran-Armitage test were used for data analysis. RESULTS: There were 5340 admissions: The median patient age was 60 years, and 55% of patients were women. The most common primary cancers were head and neck (22%), gynecologic (21%), gastrointestinal (13%), and lung (12%). There were significant trends on the GOW in decreased admissions for palliative care (12.2%, 9.6%, and 7.9%, respectively, for the 3 periods; P < .0001), fewer inpatient deaths (11.4%, 8.6%, and 6.1%, respectively; P < .0001), and fewer patients with prolonged waits for a bed on a palliative care unit (3.4%, 3%, and 1.7%, respectively; P = .002). Admissions increased for interventions (10.4%, 17.3%, and 22.5%, respectively, for the 3 periods; P < .0001) and for chemotherapy (6.8%, 6.6%, and 9.7%, respectively; P = .001). CONCLUSIONS: After the opening of an APCU at the authors' cancer center, the GOW experienced a decrease in administrative endpoints related to palliative and end-of-life care and an increase in endpoints related to cancer-directed interventions. Prospective studies with clinical endpoints will be required to determine whether this specialization of inpatient care improves quality of life, quality of death, and psychosocial well being.


Assuntos
Institutos de Câncer/organização & administração , Administração Hospitalar , Unidades Hospitalares , Cuidados Paliativos , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Feminino , Hospitalização , Humanos , Masculino , Pessoa de Meia-Idade , Avaliação de Resultados em Cuidados de Saúde , Estudos Retrospectivos , Listas de Espera
18.
J Clin Oncol ; 26(30): 4906-11, 2008 Oct 20.
Artigo em Inglês | MEDLINE | ID: mdl-18794541

RESUMO

PURPOSE: Adjuvant systemic chemotherapy administered after surgical resection of colorectal cancer metastases may reduce the risk of recurrence and improve survival, but its benefit has never been demonstrated. Two phase III trials (Fédération Francophone de Cancérologie Digestive [FFCD] Trial 9002 and the European Organisation for Research and Treatment of Cancer/National Cancer Institute of Canada Clinical Trials Group/Gruppo Italiano di Valutazione Interventi in Oncologia [ENG] trial) used a similar design and showed a trend favoring adjuvant chemotherapy, but both had to close prematurely because of slow accrual, thus lacking the statistical power to demonstrate the predefined difference in survival. We report here a pooled analysis based on individual data from these two trials. PATIENTS AND METHODS: After complete resection of colorectal liver or lung metastases, patients were randomly assigned to chemotherapy (CT arm; fluorouracil [FU] 400 mg/m(2) administered intravenously [IV] once daily plus dl-leucovorin 200 mg/m(2) [FFCD] x 5 days or FU 370 mg/m(2) plus l-leucovorin 100 mg/m(2) IV x 5 days [ENG] for six cycles at 28-day intervals) or to surgery alone (S arm). RESULTS: A total of 278 patients (CT, n = 138; S, n = 140) were included in the pooled analysis. Median progression-free survival was 27.9 months in the CT arm as compared with 18.8 months in the S arm (hazard ratio = 1.32; 95% CI, 1.00 to 1.76; P = .058). Median overall survival was 62.2 months in the CT arm compared with 47.3 months in the S arm (hazard ratio = 1.32; 95% CI, 0.95 to 1.82; P = .095). Adjuvant chemotherapy was independently associated with both progression-free survival and overall survival in multivariable analysis. CONCLUSION: This pooled analysis shows a marginal statistical significance in favor of adjuvant chemotherapy with an FU bolus-based regimen after complete resection of colorectal cancer metastases.


Assuntos
Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Neoplasias Colorretais/patologia , Neoplasias Hepáticas/tratamento farmacológico , Neoplasias Hepáticas/secundário , Neoplasias Pulmonares/tratamento farmacológico , Neoplasias Pulmonares/secundário , Adulto , Idoso , Quimioterapia Adjuvante , Neoplasias Colorretais/mortalidade , Intervalo Livre de Doença , Esquema de Medicação , Feminino , Fluoruracila/administração & dosagem , Humanos , Leucovorina/administração & dosagem , Neoplasias Hepáticas/cirurgia , Neoplasias Pulmonares/cirurgia , Masculino , Pessoa de Meia-Idade , Análise Multivariada , Estadiamento de Neoplasias , Taxa de Sobrevida
19.
Clin Cancer Res ; 14(15): 4843-9, 2008 Aug 01.
Artigo em Inglês | MEDLINE | ID: mdl-18676757

RESUMO

PURPOSE: The combination of vaccines and chemotherapy holds promise for cancer therapy, but the effect of cytotoxic chemotherapy on vaccine-induced antitumor immunity is unknown. This study was conducted to assess the effects of systemic chemotherapy on ALVAC-CEA/B7.1-induced T-cell immunity in patients with metastatic colorectal cancer. EXPERIMENTAL DESIGN: Patients with metastatic colorectal cancer were treated with fluorouracil, leucovorin, and irinotecan and were also given ALVAC-CEA/B7.1 vaccine with or without tetanus toxoid adjuvant. Eligible patients were randomized to ALVAC followed by chemotherapy and booster vaccination (group 1), ALVAC and tetanus toxoid followed by chemotherapy (group 2), or chemotherapy alone followed by ALVAC in patients without disease progression (group 3). Humoral immune responses were measured by standard ELISA assay, and carcinoembryonic antigen (CEA)-specific T-cell responses were measured by IFN-gamma enzyme-linked immunospot assay. RESULTS: One hundred eighteen patients were randomized to receive either ALVAC before and concomitantly with chemotherapy (n = 39), ALVAC with tetanus adjuvant before and concomitantly with chemotherapy (n = 40), or chemotherapy followed by ALVAC (n = 39). Serious adverse events were largely gastrointestinal (n = 30) and hematologic (n = 24). Overall, 42 patients (40.4%) showed objective clinical responses. All patients developed antibody responses against ALVAC, but increased anti-CEA antibody titers were detected in only three patients. Increases in CEA-specific T cells were detected in 50%, 37%, and 30% of patients in groups 1, 2, and 3, respectively. There were no differences in clinical or immune responses between the treatment groups. CONCLUSION: The combination of ALVAC-CEA/B7.1 vaccine and systemic chemotherapy has an acceptable safety profile in patients with metastatic colorectal cancer. Systemic chemotherapy did not affect the generation of CEA-specific T-cell responses following vaccination.


Assuntos
Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Antígeno B7-1/química , Antígeno Carcinoembrionário/química , Neoplasias Colorretais/terapia , Vacinas Virais/uso terapêutico , Idoso , Camptotecina/administração & dosagem , Camptotecina/análogos & derivados , Feminino , Fluoruracila/administração & dosagem , Humanos , Irinotecano , Leucovorina/administração & dosagem , Masculino , Pessoa de Meia-Idade , Metástase Neoplásica , Linfócitos T/metabolismo , Resultado do Tratamento
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